3. For centuries, the people of Pentecost Island have held an unusual event: land diving. Once a year, young men tie jungle vines to their ankles and throw themselves off 100 foot towers. As the men fall, they curl their heads under. This allows only their shoulders to brush the ground. The people believe that this ritual ensures a plentiful harvest. What is the central idea of the passage?
Bungee jumping probably evolved from land diving.
Extreme sports are not new.
The villagers take great risks to improve their chances of a good harvest.

PLEASE HELP!!